Product Description
Size | 5/16 BSF |
Length (measured from under the head) |
1 1/4" |
Shank diameter | 5/16" |
Pitch | 22 tpi |
Hex size max/min |
0.525" / 0.518" AF |
Thread length | 5/8" |
Material | High tensile steel Grade R |
Finish | Zinc plated |
Spanner size | 5/16 BS 1/4 W |
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BOLT 5/16 BSF X 1 1/4 GRADE R ZINC/PL
Stamped head, bolt shanks are a bit ordinary, not the usual quality i would expect. Editor. Yes, our BSF High Tensile bolts are manufactured by a forging process. the heads are marked with the tensile grade 'R' and have the manufacturers identifier. A typical bolt head is shown in the product photo, however the manufacturer markings do vary.